Giovanni van Bronckhorst branded his Rangers side’s first half display shambolic and admitted it was like his players were experiencing the Old Firm derby for the first time.
The shellshocked Ibrox boss couldn’t believe the goals the champions conceded as they went in 3-0 down at the break after a first half Celtic blitz.
Reo Hatate bagged a double and Liel Abada netted to move the Hoops a point clear of their rivals at the top of the Scottish Premiership.